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16 February, 10:56

Can the polynomial in the numerator of the expression x2-5x+7/x-9 be factored to derive (x - 9) as a factor?

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  1. 16 February, 11:15
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    No.

    Step-by-step explanation:

    Because x²-5x+7, as x = 9 is 9²-5·9+7 = 81-45+7 ≠ 0

    f (x) = x²-5x+7 is divisible by x-9 only if f (9) = 0.
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